timeout.h

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/*
 * Copyright (c) 2024 ykat UG (haftungsbeschraenkt) - All Rights Reserved
 *
 * Permission for non-commercial use is hereby granted,
 * free of charge, without warranty of any kind.
 */
#ifndef ZRTOS_VFS_MODULE_TIMEOUT_H
#define ZRTOS_VFS_MODULE_TIMEOUT_H
#ifdef __cplusplus
extern "C" {
#endif

#include <zrtos/types.h>

typedef enum{
     ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__START
    ,ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__STOP
    ,ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__RESET
    ,ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__SET_CALLBACK
}zrtos_vfs_module_timeout_ioctl_t;

typedef void (*zrtos_vfs_module_timeout_callback_t)(void *data);

typedef uint16_t zrtos_vfs_module_timeout_microseconds_t;

typedef struct{
    zrtos_vfs_module_timeout_callback_t        callback;
    void                                       *callback_data;
}zrtos_vfs_module_timeout_inode_t;

uint32_t zrtos_vfs_module_timeout__get_overflow_counter_value_divider(
    uint16_t prescaler
){
    return ((ZRTOS_ARCH__CPU_CLOCK_HZ+(prescaler*1000)-1)/prescaler/1000);
}

uint16_t zrtos_vfs_module_timeout__get_overflow_counter_value(
     zrtos_vfs_module_timeout_microseconds_t us
    ,uint16_t prescaler
){
    uint32_t tmp = zrtos_vfs_module_timeout__get_overflow_counter_value_divider(
        prescaler
    );
    return (us + tmp - 1) / tmp;
}
/*
zrtos_error_t zrtos_vfs_module_spi__on_ioctl(
     zrtos_vfs_file_t *thiz
    ,char *path
    ,int request
    ,va_list args
){
    zrtos_error_t ret = ZRTOS_ERROR__SUCCESS;

    switch(request){
        case ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__START:
            // Timer 0 konfigurieren
            TCCR0 = zrtos_va__arg(args,uint8_t);//(1<<CS01); // Prescaler 8
            TCNT0 = zrtos_va__arg(args,uint8_t);
            // Overflow Interrupt erlauben
            TIMSK |= (1<<TOIE0);
        break;
        case ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__STOP:
            TIMSK &= ~(1<<TOIE0);
        break;
        case ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__RESET:
            TCNT0 = zrtos_va__arg(args,uint8_t);
        break;
        case ZRTOS_VFS_MODULE_TIMEOUT_IOCTL__SET_CALLBACK:
            zrtos_vfs_module_timeout__callback = zrtos_va__arg(
                 args
                ,zrtos_vfs_module_timeout_callback_t
            );
            zrtos_vfs_module_timeout__data = zrtos_va__arg(args,void*);
        break;
        default:
            ret = ZRTOS_ERROR__INVAL;
        break;
    }

    return ret;
}

ZRTOS_VFS_PLUGIN__INIT(avr_timeout5,
    ZRTOS_VFS_PLUGIN__0_ON_OPEN_DEFAULT()
    ZRTOS_VFS_PLUGIN__1_ON_CLOSE_DEFAULT()
    ZRTOS_VFS_PLUGIN__2_ON_MOUNT(zrtos_vfs_module_avr_timeout5__on_mount)
    ZRTOS_VFS_PLUGIN__3_ON_UMOUNT(zrtos_vfs_module_avr_timeout5__on_umount)
    ZRTOS_VFS_PLUGIN__4_ON_READ_DEFAULT()
    ZRTOS_VFS_PLUGIN__5_ON_WRITE_DEFAULT()
    ZRTOS_VFS_PLUGIN__6_ON_CAN_READ_DEFAULT()
    ZRTOS_VFS_PLUGIN__7_ON_CAN_WRITE_DEFAULT()
    ZRTOS_VFS_PLUGIN__8_ON_SEEK_DEFAULT()
    ZRTOS_VFS_PLUGIN__9_ON_IOCTL_DEFAULT()
);
*/

#ifdef __cplusplus
}
#endif
#endif